# AbtoVoIPClient vs modulus SoftPhone

The clearest difference is rating: modulus SoftPhone at 5.0 against AbtoVoIPClient's 3.7. AbtoVoIPClient's advantage is review sentiment (67% vs 50%) and device support (3 vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

modulus SoftPhone holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews complicate that: 67% of AbtoVoIPClient's written reviews are positive against 50% of modulus SoftPhone's, so the app with the better star average is not the one people write more warmly about.

AbtoVoIPClient ships an update every 5 months, modulus SoftPhone every 6 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AbtoVoIPClient | modulus SoftPhone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/abtovoipclient/id527208668/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/modulus-softphone/id1562146672/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | **66.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 12 MB | 107 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Sviatoslav Volodymyruvych Litynsky Private Enterpreneur](https://appshunter.io/developer/329178119) | [MODULUS TELECOMS & IT SA](https://appshunter.io/developer/1562146674) |

## What reviewers say

### AbtoVoIPClient

[App page](https://appshunter.io/ios/app/abtovoipclient/id527208668)

This application provides voice and video calling capabilities, along with text chat, for users with SIP accounts. It supports direct calls between clients and offers secure communication options. The app integrates with native iOS call features for a seamless user experience.

**Highlights:** Voice calls, Video calls, Text chat, Works with all popular SIP servers, Direct calls between clients, Secure calls using SRTP/ZRTP, CallKit integration

**Features:** macOS Compatibility

**In-app purchases:** none


### modulus SoftPhone

[App page](https://appshunter.io/ios/app/modulus-softphone/id1562146672)

This application provides a simple SIP softphone experience, specifically configured to integrate with your modulus account. It allows for easy communication management through a user-friendly interface.

**Highlights:** SIP SoftPhone functionality, Modulus account integration, Easy to use interface, VoIP calling

**In-app purchases:** none


## Frequently asked questions

### Is AbtoVoIPClient free?

AbtoVoIPClient is free to download, with no in-app purchases.

### Is modulus SoftPhone free?

modulus SoftPhone is free to download, with no in-app purchases.

### Which has better reviews, AbtoVoIPClient or modulus SoftPhone?

modulus SoftPhone is rated higher. AbtoVoIPClient averages 3.7 out of 5 from 3 ratings, while modulus SoftPhone averages 5.0 from 2 ratings.

### Do AbtoVoIPClient or modulus SoftPhone have ads?

Neither AbtoVoIPClient nor modulus SoftPhone shows ads.

### Which is updated more often, AbtoVoIPClient or modulus SoftPhone?

AbtoVoIPClient ships an update every 5 months, and modulus SoftPhone every 6 months. Most recently, AbtoVoIPClient was updated on October 23, 2026 and modulus SoftPhone on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*